Made by C.S. Osborne, these are some of the best hog ring pliers in the industry. The pliers are specifically designed to install hog rings (also known as loop and end clamps). The pliers and hog rings are used to splice elastic cord and attach upholstery to a piece of furniture as well as general fastening functions. The hog ring pliers fit 1/8-inch, 3/16-inch, 1/4-inch, 5 /16-inch and 3/8-inch sizes of loop and end clamps. Offered here in an open-spring option, these pliers are ergonomic and strong.